Add doc aliases "vector" and "list" to Vec

[madsmtm]

• "vector" is what "vec" is short form for.
• "list" is a common name for this concept in a lot of other languages (ArrayList in Java, list in Python, List in C#). C++ uses the term for a linked list (std::list), so maybe this is contentious?

I believe that this falls under the doc alias policy, and I think it's plausible that a newcomer would search for either of these terms, and expect to find Vec.

r? libs

[Noratrieb]

There must be an obvious single target for the alias that is an exact analogue of the aliased name

I think list doesn't quite match that part of the policy because of what you said, but Vec is an extremely important and common type while LinkedList is pretty much useless, so I think it makes a lot of sense to put it on vec. Anyone who's looking for linked lists just doesn't know that they're looking for vec yet :3.

@bors r+ rollup

[bors]

📌 Commit 1111730 has been approved by Noratrieb

It is now in the queue for this repository.